Anytime somebody yells in the song (in an obviously foreign accent) "play the guitar!" Or just "guitar!" And it's followed by a guitar solo..._________________"I awoke in a sweat, from the american dream." - amebix

Funny subject, three things come to mind.
Hoest does this triple "ooh-ooh-ooh" on the last track of Taake's Hordaland's Doedskvad.
Stone of Destiny comes out of nowhere on Absu's Tara.
BOW TO ME SPLENDIDLY on Covenant.